- API 5CT K55 oil casing pipe is mainly used as a pipe that is lowered into the well for liquid production or liquid injection. After drilling is completed, crude oil and natural gas are transported from the oil and gas layer to the surface.
- API 5CT K55 Casing Tubing Chemical Composition, mass fraction (%)
| Grade | Type | C | Mn | Mo | Cr | Ni max. | Cu max. | P max. | S max. | Si max. | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | min. | max. | min. | max. | |||||||
|
K55 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
0.03 |
0.03 |
- |
- API 5CT K55 Casing Tubing Mechanical Properties
| Standard | Type | Tensile Strength MPa | Yield Strength MPa | Hardness Max. |
|---|---|---|---|---|
| API SPEC 5CT | K55 | ≥517 | ≥655 | --- |
